Locomotive-engine.



F. J. COLE & H. R, STAFFORD.

LOOOMOTIVE ENGINE.

APPLICATION FILED $33.16, 1910.

Patented Aug. 2, 1910.

2 SHEETS-SHEET l. r

| NTORSV P. J. COLE & H. R. STAFFORD.

LOGOMOTIVE ENGINE.

APPLICATION TILED FEB.15, 1910.

966, 166. Patented Aug. 2, 1910.

2 8HEETS-SHEBT 2.

WITNESSES Ma (5% %45 @MA? UNITED STATES PATENT OFFICE.

FRANCIS J. COLE AND HAL R. STAFFORD, OF SCI-IENECTADY, NEW YORK.

LOCOMOTIVE-ENGINE.

To all whom it may concern:

Be it known that we, FRANCIS J. COLE and HAL R. STAFFORD, both ofSchenectady, in the county of Schenectady and State of New York, havejointly invented a certain new and useful Improvement inLocomotive-Engines, of which improvement the following is aspecification.

Our invention relates to locomotive engines of the four cylinderbalanced type, and its object is to provide means whereby the admissionand exhaust of steam to and from two cylinders of equal diameter,located in parallel planes, may be effected by a single distributionvalve appliance, without involving the use of complicated mechanism orof long and tortuous steam and exhaust passages.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is a vertical transverse sectionthrough one of the cylinder saddles of a four cylinder balancedlocomotive engine, adapted for the practice of our invention, on theline a a of Fig. 2; Fig. 2, a longitudinal section through the same, onthe line 7) cl 6 of Fig. 1, with the distribution valve appliance inelevation; Fig. 3, a similar section, on the line b d 0 of Fig. 1, withthe distribution valve appliance in section; Fig. 4, a similar sectionon the line 6 d b of Fig. 1, with the distribution valve appliance inelevation, and; Fig. 5, a longitudinal central section through the valvebushing, illustrating a structural modification.

In the practice of our invention, we construct a cylinder saddle, 12,which is substantially similar to prior constructions so far as relatesto its general form and manner of connection to a counterpart saddle andto the adjacent side frame member, 8, and in the particular ofcomprehending, in a single casting, an outer cylinder, 12, an innercylinder, 12*", of the same diameter as the inner cylinder, and a valvechest, 12, located above and between the vertical planes of the outerand inner cylinders. The outer cylinder is closed by heads, 12", and isfitted with a piston, 40 fixed upon a piston rod, 10*, and the innercylinder is closed by heads, 1%, and is fitted with a piston, 40, fixedupon a piston rod, 40*. The piston rods are connected to a driving axleor axles in the ordinary manner, and are adapted to be reciprocated, inrespectively Specification of Letters Patent.

Application filed February 15, 1910.

Patented A11 2, 1910.

Serial No. 544,006.

passage being, in the instance exemplified,

bifurcated, so as to deliver the steam on opposite sides of thetransverse central plane of the chest, and is exhausted from the valvechest through an exhaust passage, 14, cored in the saddle and extendingfrom the central portion of the chest to the top of the saddle, at whichit is connected to an exhaust pipe as in ordinary practice. The valvechest is closed at its ends by heads, 1%, and is lined with a bushing,12 which, in this instance, is shown as formed in two sections,separated by a space at the middle portion of the valve chest, so as tobe there constantly in open communication with the exhaust passage. Itwill, however, be obvious that, if preferred the bushing mayequivalently be made in a single piece and be provided with a pluralityof ports in its periphery at its middle portion for communication withthe exhaust passage, as shown in Fig. 5.

One of the cylinders, in this case the outer one, 12, is provided withinduction and eduction ports 0, c, which are curved longitudinally fromthe ends of the cylinder toward the central transverse plane thereof andcommunicate with ports 6, e in the periphery of the valve chest bushing.The other cylinder, in this case the inner one, 12% is provided withinduction and eduction ports, 6, b which are substantially in verticalplanes, and extend from the ends of the cylinder to peripheral ports d,d in the valve chest bushing, between the ends thereof and the ports 6,e. If preferred, the location of the curved and vertical ports,relatively to the cylinders, may be transposed, that is to say, theouter cylinder may be provided with vertical ports and the inner withlongitudinally curved ports.

Steam is simultaneously admitted to one end of one cylinder andexhausted from the same end of the other cylinder, by a distributionvalve appliance consisting of two inside admission balanced piston valvemembers, which work steam tight in the valve chest bushing, 2F, and arefixed upon a common stem, 16 adapted to be reciprocated by any suitableand preferred form of valve gear, in the ordinary manner. Each of thevalve members consists of an open ended hollow or tubular body, 16, andtwo end pistons, 16, each of which is fitted with a suitable packingring or rings. Each valve member receives steam from the steam supplypassage, 13, and delivers it to the induction and eduction ports of thecylinders, between its end pistons. The exhaust steam from the cylinderhaving the longitudinally curved induction and eduction ports, passesfrom said ports into the central portion of the valve chest bushing,between the two valve members, and thence into the exhaust passage, 14,and the exhaust steam from the cylinder having the vertical inductionand eduction ports passes from said ports, through the tubular bodies ofthe valve members, to the exhaust passage. The valve chest bushingterminals of the vertical ports being located between the ends of thevalve chest and the valve chest bushing terminals of the longitudinallycurved ports, it will be seen that while steam is being admitted by thedistribution valve appliance to one end of one of the cylinders, it isbeing simultaneously exhausted from the same end of the other cylinder.

It will be obvious that, if preferred, the relative positions of theexhaust and steam passages, 14 and 18, in the saddle, may, withoutdeparture from the spirit and operative principle of our invention, bereversed, that is to say, the steam passage, 13, may lead centrally intothe valve chest, and the exhaust passage, 14, be bifurcated, having itsarms leading into the valve chest between the steam passage and the endsof the chest. The simultaneous admission and exhaust of steam to andfrom the inner and outer cylinders will be elfected by the distributionvalve in the same manner as with the relative positions of the exhaustand steam passages first described.

Our improvement, which is of ready applicability in designs embodyingthe usual relation of cylinders, frames, and valve gear, presents theadvantages of simplicity and economy of construction, and the ab senceof tortuous or unduly long passages in the cylinder saddle.

lVe claim as our invention and desire to secure by Letters Patent:

1. A locomotive engine cylinder saddle comprising an inner and an outercylinder located in parallel vertical planes, a valve chest above saidcylinders, a passage leading centrally into said valve chest, abifurcated passage leading into said valve chest on opposite sides ofthe central passage, in-

duction and eduction passages leading from one of the cylinders into thevalve chest adjacent to the ends thereof, and induction and eductionpassages leading from the other cylinder to the valve chest between thepassages of the first named cylinder and the central passage, thesemembers being combined for joint operation to efiect the directadmission and exhaust of steam to and from each of the cylinders.

2. The combination, in a locomotive engine, of an inner cylinder, anouter cylinder, a valve chest having a central passage and passagesadjacent to its ends, one of said cylinders having induction andeduction passages leading into the valve chest adjacent to the endsthereof and the other cylinder having induction and eduction passagesleading into the valve chest between those of the first named cylinderand the central passageyand a distribution valve appliance controllingthe simultaneous admission of steam to one end of one cylinder and thedirect exhaust of steam from the same end of the other cylinder, throughsaid induction and eduction passages.

3. The combination, in a locomotive engine, of an inner cylinder, anouter cylinder, a valve chest having a central exhaust passage and steamsupply passages adjacent to its ends, one of said cylinders having induction and eduction passages leading into the valve chest adjacent tothe ends thereof and the other cylinder having induction and eductionpassages leading into the valve chest between the passages of the firstnamed cylinder and the exhaust passage, and a distribution valveappliance comprising two double headed open ended tubular piston valvesfixed upon a common stem, each of said valves controlling steamadmission to each cylinder between its heads and controlling directexhaust from one cylinder by its inner head and direct exhaust from theother cylinder through its tubular body.

4. The combination, in a locomotive engine, of a cylinder saddleconstructed substantially as herein set forth, and a distribution valveappliance comprising two double headed piston valves having tubular openended bodies spaced apart upon a common valve stem for communication,through their bodies, with the central passage of the cylinder saddle,and communicating, around their bodies, with the bifurcated passage ofthe cylinder saddle, whereby the direct admission and exhaust of steamto and from each of the cylinders of the saddle is effected.

FRANCIS J. COLE. HAL R. STAFFORD.

\Vitnesses S. W. TYLER, O. C. MYERS.

